Xinpu Phosphate Mine, medium and small-sized, features Complicated hydrogeological conditions and Marine sludge and heaving sand menacing underground operation.

The heat cured sand of Al-Mg-B compound phosphate inorganic binder was modified by ultrasonic oscillation to binder and adding organic polymer YPPJ while mixing of sand.

This paper deals with the preparation of composite phosphate modified sodium silicate binders and sand mined method and its properties.